BOD Calibraton Standard Back Catalog number: 50258 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66187 2,2’,3,4’,5,5’,6-Heptachlorobiphenyl (187) Price on request 66056 2,3,3',4'-Tetrachlorobiphenyl (56) Price on request 10638.12-50-NN 1,2,3,4,6,7,8-Heptabromodibenzofuran,50 µg/mL,n-nonane,1mL, Price on request